Kiln for firing china, glass, or other ware.



PATBNTED JAN. 6, 1903.

APPLIGATION FILED OCT. 12, 1901.

N0 MODEL.

INVENTOR WITNESSES n1: rlonrys Prrzns no. PNOTQLITHCL, WRMNGI'M, u. c

UNITED STATES PATENT rFIcE.

HUGO THUEMLER, OF SEVVICKLEY, PENNSYLVANIA.

SEEGIFICATION formingpart of :Letters P atent No. 717,725, dated January 6, 1903.

ApplieationfiledOctoher 12,1901 srmirmasm. (Nqmddeh) To all whom; it incty dancer-n.-

Be it known that I, HUGO THUEMLER, of the borough of Sewickley; in the county of Alice gheny and State of Pennsylvania, have in vented a certain new and-useful Improvement in Kilns for Firing China; Glass, orother- WVare, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in Which- Figure 2 is a longitudinal vertical sectional view of my improved kiln. Fig. 1 is a cross sectional view of the same. Fig. 8 is a vertical sectional view of a. modified form, and Fig. 4 is a cross-sectional viewof another m odificatiou.

In the kilns now in general use for firing china, glass, or other ware great dificulty is experienced owing to the unequal and irregu lar heating of the articles to be fired. It has been necessary to constantly watch the draft,

V the fire, and the fuel which is added thereto in order that the heat may in so far as pos-j sible be kept uniform. j

The object of my invention is to secure uni-- form heat through every portion of the kiln and to prevent danger of irregular heating caused by over-firing or irregular firing of the kiln and at the same time to fire the ware without a direct application of the flames to the object.

I will now describe my invention, so that, others skilled in the art may manufacture and use the same.

In the drawings, 01. represents a cylindrical kiln, preferably formed of iron-or other suitable metal or of tile or other refractory material, the cylinder being closedat both ends and provided with a suitable door (notshown in the drawings) for the introduction and withdrawal of the ware. Thiscylinder a is set in the brickwork of a furnaceb, the forward end being flush withthe outer face of the masonry. Around the kiln o, is a cylindrical metal mantle c, which is vsupported around the kiln by chains (1, which extend through the top wall of the masonry b and pass over sheaves e, which are keyed to the horizontal shaft f, which shaft is provided 'ary kiln a, .being built in the fire-chamber of the mawith a driving or band wheel g. In the lower portion of the masonry b is the fire-chamber i.

In the operation of this device the china or glass or other ware is placed in the stationand the door is closed. The fire sonry or furnace b heats the mantle c. The lower portion and sides being nearer the fire receive, of course, the greater-heat. This mantle, however, is caused to revolve by the revolution of the shaft f, which imparts movement to the chains 01 and causes the mantle to rotate about the kiln a, the mantle being thus heated equally throughout its entire surface and imparting an equal heat to all portions of the cylindrical kiln.

In Fig. 3 the mantle constitutes the body of the kiln and is caused to revolve by the chains (1, the ware being supported by suit able racks m, as indicated in the drawings, extending from the stationary portions or ends of .the kiln, which are fitted in the masonry b.

In Fig. 41 have shown a modification where two kilns are'placed side by side in the firechamber and the mantles of which are supported by rollers 70 on the power-shafts Z. On applying power to these shafts the rollers are caused to rotate, which imparts a rotatory movement to the mantles. lhe power may be applied to onlyone of these shafts. Other means may be used to revolve the mantles.

The great advantages of my invention will be apparent to those skilled in the art. A regular and uniform heat is maintained in all parts of the kiln at all times of the operation, so that the ware is not in danger of being spoiled by irregular heatin I do not desire to limit my invention to the particular construction shown in the drawwas.

Having thus described my invention, what I claim, and desire to secure by Letters Patout, is-

1. In a kiln for firing china, glass, &c., the

combination of a closed chamber for holding the articles, a rotatory mantle, and a firechamber.

2. In akiln for firing china, glass, &c., the

combination of a rotatory mantle, means for In testimony whereof I have hereunto set supporting the articles, and a fire-chamber. my hand.

3. In a kiln for firing china, lass, or other ware, the combination of a cylindrical cham- I HUGO THUEMLER' 5 ber, a cylindrical mantle surrounding the Witnesses:

A. M. STEEN,

same, means for rotating the mantle, and a fire-chamber.

JAMES K. BAKEWELL. 

